Really smooth and stylish menu and use of colors. I found shooting the colorguns a pleasing experience, perhaps some haptics on fire and/or hit might help the experience? Without any sort of cues as to which colors were the target, for awhile I thought each 'puck' might have its own tone, and that this was a tone-sequence-matching game, but discovered quickly that each color hit produced the same sound effect, or similar enough to not seem different.
I enjoyed shooting the guns so much that I went a little Death Blossom for fun, spinning in spot and shooting them as fast as I could, but without any sort of sense of progression or target selection, thats as far as the fun took me.
Still, really smooth gameplay, and that's important. Great work!